Tractor



A. D. RAY.

TRACTOR.

APFLLCATION FILED JAN.26,1920.

Patented July 5, 1921.

4 SHEETS-SHEET 1 fizz/5272272- 1 ALBERT L7. A317 g, %M; 9m

#wlj. RAY.

TRACTOR.

APPLlCATiON FILED lAN gfiv I920.

' Paiante July 5, 1921.

4 SHEETS-SHEET 2- YQ Awmr U. PA Y I aw; a,

A D. RAY.

TRACTQR AP'PLLCATION FILED lAN.26, 1920.

Eatefited 3111315, 1921.

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w E E E5 TRACTQR.

APFHCATION HLED JAN. 26, 1920.

Patented July 5, 19:21.

1-SHEETS-SHEET 4 Inland L wm E k u A d r 4.0 w. T F AM renew-roe.

Application Illfid. January 28, 1920.

To all to 72 am it hwy concern Be it known that I, llnenirr D. RAY, a citizen of the United States, residing-at Cleveland, in the county of Guyahoga and State of @liio, have invented certain new and useful Improvements in Tractors, of which the following is a specification.

This invention relates to improvements i tractors adapted to farm purposes in eral, particularly for the draft of agricultural implements.

There are various types of tractors. of them being classified as endless see others as two-Wheeled tractors. Most '3 these vehicles are adaptable to the operation oi certain implements but are not eili cient in their coaction with other appliances commonly used. on a farm. The so-called endless track tractor possesses advantages for some kinds of work, while the two- Wheeled tractor is desirable for others. The present invention embodies the m vantageous features of the two general types of tractors,

having for its primary object the provision of a motor driven vehicle for draft purposes.

that is compact, durable, simple, economical, and efficient, the salient factor being ciliciency. With this in view the invention provides a tractor oi. novel construction adaptable to the draft of, and effective cooperation With any of the agricultural in) plements in common use. It provides a swiveled 0r oscillating connection that adapts the tractor and its consort to uneven ground conditions. It further provides a convertible construction that enhances the utility of the machine through economy of fuel consumption and wear on moving It provides an adjustable tread construction by which great traction power. may be atteined when the machine is employed for heavy work, such as deep plowing, and accommodating it to lighter top soil work, such as cultivating, dishing, harrowing, seeding or mowing Where less traction power-is required. This adjustable feature also facilitntes the steering of the tractor when it is desired to make short turns. The in; proved tractor may be made comparatively li ht and still be highly efficient, which is an important factor of economy.

lVith these and other apparent objects and advantages in view, the invention consists in the construction, combination and ranoement of parts as-hereinafter describe specification of Letters Eatent.

FPoteniee uly 5i. iq i.

Serial No. 353,985l.

pointed out definitely in the aim-ended claims, reference being had to the hccompsnying; drawings which are made part of the specification. similar reference -choral:-

'ters being employed to designate cerresg iond ing part...

In the said Fig. :1 plan view of the tractor ail cultivator e'ti'ached.

3 a front elcv a side elevation traction elements of the machine on the hour side the front wheels elegmentary section on line section on line a 12106 iiied construction. one.

"GClllOll on line 8-8 oi 7 in the preferred construction a horizon Fig. 8 is a plan -e Within deemed necessary there are various types of internal combustion engines that are 5.

plicable to the present improved tractor.

A reach member 4% is connected with tr. frame 1 by a swivel pin orldnc-bolt 5, member 4; being adapted to horizontal oscillation onsaid member 5. A segmental rack 6 is attached to the rear of the frame 1. said rack oeing in mosh with a spur near 7. The rack and gear are housed in the member i, as shown, said gear 7 being lined on a stub shaft 8 which carries a bevel gear 9. said gear 9 being in mesh with a companion gear 10 carried on the steering rod ill: The sicering rod ll mounted in suitable brackets and 13 which are attached to the member 4, and is provided with, a hand-Wheel 1d. ict ivill readily be seen "that the tractor can be guided or aimed to the right or left by the steering rod 11, through the coaction of the gears 10.9, 7 and'fi.

Rocker ZilillS 15 are iournaled on the that support the drive Wheel 22. extend Forward and are axles 'lhese arms provided with ad is a fragmentary side elevation of jections 30, and a connecting rod or iistahle bearings at 15 for auxiliary traction wheels 16.- The wheels 16 are of less diam eter than the drive wheels 2 and are in alinement with said wheels 2. Sprocket traction chains 1'? connect the wheels 2 and the wheels 16 and are driven by said wheels z. A yoke 18 is pivotally connected at 18* with the two inner rocker arms 15, and levers 19 fulcrumed on the frame 1 at 1 are pivotally connected with the yoke 18 at 18*. A shaft 20 is journaled transversely in the frame 1, said shaft being provided with a depending crank arm 21 which is connected by-a rod 22 with the arm 19" of one of the levers 19, as shown at 22 The shaft 20 carries a spur gear 23 which meshes with a vertically movable rack 24:, said rack being operated. by a lever 25 and guided by the swivel member 5. The lever 25 is fulcrumed at 25 on a rockable member 26 pivotall y connected with the memher 4.- at 26 thereby providing the necessary movement of the fulcrum 25 when the lever 25 is actuated to impart a verti -al movement to the rack member 2%. Upward movement of the rack 24%, acting on the gear 23, causes the shaft 20 to turn and, through the coaction of the mechanism made up of the members 19, 18 and 15, raises the forward. wheels 16, their axes moving in an arc with the main-drive wheel axles 1 as a center, Notable among the advantages incident to this operation, are, first, the regulation of the traction power to the working conditions. For heavy work, such as deep plowing, where greater traction is desirable, the forward wheels 16 are dropped down, as shown in Fig. 1. For light top soil work, that requires less traction force, the wheels 16 are raised and less motive energy is required to drive the tractor, which results in economy of fuel. consumption, increased cificiency and life of the machine. Second, the adjustable forward wheel construction, facilitates the turning of short corners, and aids in extracting the treads from dead furrows and ditches, or soft loam soil.

,A locking bar 27 is )ivotally connected with the lever 25 at 27. fiaid bar is provided with one or more notches 27", which are adapted to engage a projection 28 on the member 4. The operation of said bar is controlled by a lever 29 and spring connection Q9.

Depending projections 30am provided on the reach member 4. Said projections have eyes 30 therein arranged -in longitudinal alinement and adapted to register with cone spending eyes in fixtures 31 attached to the implement reach 32. When the implement is connected with the tractor the fixtures 3i are in juxtaposition to, and forward of the propintle 33 is passed through the registering eyes, thereby hitching the implement to the tractor and allowing an oscillating movement beconnectcd with the sprockets tween said tractor and implement, thereby adapting the machine and its consort to cooperative action onuneven ground condi tions without disarrangement of the working elements, or inconvenience to the operator, the tractor being operated from the seat of the implement.

In the modification illustrated in Figs. 7 and 8, it will be noted that the construction and the operation in general is t-ie same as that of the preferred form; the traction elements are, however, different. In this modification the master drive wheels l0 are in direct contact with the ground, being provided with suitable traction lugs 40 and sprockets i1. "Forward "wheels are journaled in the rocker members i3 which have an arcuate movement centering on the axles i". Sprockets M are attached to the wheels 42, said sprockets being 41 bythecnain the wheels 42 45. The vertical position of v 'or. the raising relatively to the wheels 40,

and lowering of said wheels is controlled in the same manner as that (ilescribed in reference to the preferred construction.

It will be understood that various alterations and anodifications in details of construction are possible. without (.lepartin from the spirit of my invention, and that am therefore not limited to the specific form as Shown. and described, only so far as governed by the scope of the appended ,claims.

What I claim and desire to secure by Le ters Patent is:

1. In a tractor, the combination of a sup porting frame, a motor carried on said frame, main traction wheels mounted on the frame and adapted to bedriven by the motor, rocker arms journaled on the axes of the main traction wheels and extending ra dially therefrom, auxiliary wheels journaled in said rocker arms, driving connecting means between the main traction whcelsand the auxiliary wheels, compound lever 1nechanism connected with the frame and the rocker arms for vertically oscillating said rocker arms, rack and pinion mechanism for operating said lever KI18(fl12llllSlll,21 reach member horizontally swivelcd to' means connected with said reach member for actuating the said rack, and coacting means connected with said reach member and the frame for horizrmtally oscillating the frame.

2. In a tractor, the combination of a supporting frame, a motor carried on said frame, main traction wheels mounted on the frame and adapted to he driven'by the motor, rocker arms journalcd on the axes of the main t'action wheels aiid extending radially therefrom, auxiliary wheels journaled in said rocker arms, compound lever mecl'lanism connected wiilvthe frame and the rocker arin's for vertically oscillating the frame,

said rocker arms thereby imparting arcuate movement to the auxiliary wheels, rack and pinion mechanism for operating said lever mechanism, a reach member horizontally 5 swivelecl to the frame, means connected with said reach member for actuating the afore said rack, coacting means connected With said reach member and the frame for hor zontally oscillating the frame, and vertically oscillatable implement-hitch means connected with the reach member. I

In testimony whereof I aflix my signature.

ALBERT D. RAY. 

